EP1957791A1 - Lightning protection system for a wind turbine blade - Google Patents
Lightning protection system for a wind turbine bladeInfo
- Publication number
- EP1957791A1 EP1957791A1 EP06818138A EP06818138A EP1957791A1 EP 1957791 A1 EP1957791 A1 EP 1957791A1 EP 06818138 A EP06818138 A EP 06818138A EP 06818138 A EP06818138 A EP 06818138A EP 1957791 A1 EP1957791 A1 EP 1957791A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lightning
- blade
- conductor
- receptor
- protection system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/30—Lightning protection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/20—Rotors
- F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
- F05B2240/307—Blade tip, e.g. winglets
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Definitions
- the present invention relates to a lightning protection system for a wind turbine blade, wherein the blade is a shell body made of a composite material and comprises a root area and a tip end, and wherein the lightning protection system comprises at least one lightning receptor arranged freely accessible in or on the shell body surface at or in the immediate vicinity of the tip of the blade, and a lightning conductor made of electrically conductive material extending within the shell body along substantially the entire longi- tudinal direction of the blade, and wherein the lightning receptor and the lightning conductor are electrically connected by means of a connection area.
- WO 96/07825 discloses a lightning protection system, in which the tip of the blade is provided with a so-called lightning receptor made of an electrically conductive material. This lightning receptor can "capture" a lightning strike and conduct the current through a lightning conductor, said conductor extending in the longitudinal direction of the blade and being earthed via the rotor hub of the wind tur- bine. This system has often been shown to provide a satisfactory protection against lightning strikes.
- the lightning protection sys- tem may be provided with several lightning receptors (multireceptors) or lightning conductors along the longitudinal direction of the blade.
- the lightning receptors are arranged at a maximum interval of five meters to ensure that there are no lightning strikes (or flashovers) through the surface of the blade.
- the object of the invention is to provide a new and improved lightning protection system for wind turbines.
- this object is achieved by the lightning conductor in its entire longitudinal direction as well as the connection area between the lightning conductor and the lightning receptor being electrically insulated in order to prevent the built-up of streamers and/or leaders.
- Such streamers and leaders are prestages of lightning strikes and thus, preventing their built-up also prevents lightning strikes.
- the necessity of multireceptors is avoided.
- the lightning conductor is preferably connected to earth via the hub so that current from a lightning strike is safely conducted from the lightning receptor to the lightning conductor and finally to earth.
- it may be sufficient with a spark gap between the lightning conductor and the hub.
- the lightning conductor and/or lightning receptor are electrically insulated at least up to the shell body of the blade and preferably at least partially through the shell body.
- the risk for damaging lightning strikes or flashovers at the tip end of the blade is minimized.
- the lightning conductor comprises an inner conductor made of electrically conductive material, such as copper or aluminium, and a bedding insulation made of polyethylene, preferably HDPE.
- this composition has been found to be particularly resistant to lightning strikes or flashovers through the surface of the blade.
- the inner conductor has a diameter in the range of 3-30 mm, 5-15 mm or 7.5-12 mm and the bedding insulation has a thickness of 2-15 mm, 3-10 mm or 4- 7 mm. It has been found that these dimensions are sufficient to prevent lightning strikes through the surface of the blade as well as to conduct the current of a lightning strike through the lightning conductor.
- a layer of semiconducting material is provided between the inner conductor and the bedding insulation.
- this semiconducting material has a thickness of 0.5-1 mm. The semiconducting material provides additional protection against flashovers by minimizing electrical field concentrations in the conductor.
- the lightning receptor and the connection area between the lightning receptor and the lightning conductor are insulated by means of an insulating material, which is separate from the bedding material.
- This insulating material may e.g. be a shrink sleeve or silicone. The additional insulating material minimizes the risk of a lightning strike or flashover in the connection area between the lightning receptor and the lightning conductor.
- the tip of the blade is formed as a substantially solid body of insulating material.
- this insulating material is a plastic material, such as PVC, fibre-reinforced polymer or polyurethane (PUR), e.g. foam PUR.
- PUR polyurethane
- the lightning conductor is provided with a connection means, e.g. a thread, at its outer end to connect said conductor to a corresponding means on the lightning receptor.
- the lightning receptor may e.g. be adapted to include an inner thread so that the lightning receptor and the lightning conductor can be screwed together.
- the lightning receptor is provided with a connection piece having an outer thread, while the lightning conductor includes an inner thread, e.g. cut into the insulating sheathing made of HDPE.
- the lightning receptor is positioned at the trailing edge of the blade. Thus, noise emissions from the blade may be reduced. It may be advantageous to provide the surface of the blade with a diverter so that lightning striking at the leading edge of the blade is conducted to the lightning receptor.
- At least one drain hole is arranged at or in the immediate vicinity of the tip of the blade, and optionally, a diverter extending substantially between the location of the drain hole and the location of the lightning receptor is positioned on the surface of the blade.
- the drain hole ensures that accumulations of water do not form within the blade, which increases the risk of flash- overs from the lightning conductor to said accumulations of water.
- the diverter ensures that lightning striking a drain hole is conducted to the lightning receptor via the diverter and finally to earth via the lightning conductor.
- a filter for the collection of particles is preferably arranged inside the blade so that said particles do not block the drain hole.
- the lightning receptor has the form of a Franklin rod or is substantially shaped like an egg. This form ensures that the lightning receptor has no "sharp" edges to be struck by lightning and to be damaged e.g. by melting. A rounded receptor surface prolongs the useful life of the receptor, since its geometry is altered only minimally by a lightning strike.
- a part of the tip of the blade is adapted to be the lightning receptor made of e.g. tungsten, copper or brass.
- the lightning receptor is streamlined so that it matches the tip of the blade.
- Fig. 1a is a schematic view of a blade according to a first embodiment of the invention, seen towards the trailing edge of the blade,
- Fig. 1 b is a top view of the same blade
- Fig. 1c shows a magnified detail of the blade shown in Fig. 1 b
- Fig. 2a is a schematic sectional view along the line Hb-IIb in Fig. 2b of a part of a blade according to another embodiment of the invention
- Fig. 2b is a partially sectional view of the same blade along the line lla-lla in Fig. 2a,
- Fig. 3 is a schematic partially sectional top view of a part of a blade according to a third embodiment of the invention.
- Fig. 4 is a sectional view through a lightning conductor according to the invention.
- the invention relates to wind turbines of the type known in the industry as wind turbines according to the Danish concept.
- a wind turbine consists of a tower, a nacelle with gear and generator and a rotor consisting of a hub and three blades, where the rotor shaft is substantially horizontal.
- the lightning protection system of the blade may be provided with several lightning receptors or lightning conductors along the longitudinal direction of the blade.
- the lightning receptors are arranged at a maximum interval of five meters to ensure that there are no lightning strikes through the surface of the blade.
- this is a comparatively expensive and complicated solution.
- Fig. 1 shows a first embodiment of a blade 1 according to the invention.
- a lightning receptor 3 is positioned at the tip end of the blade 1 , said lightning receptor preferably, but not necessarily, being predominantly egg-shaped or formed like a so-called Franklin rod.
- the lightning receptor 3 is connected to a lightning conductor 2 extending substantially in the entire longitudinal direction of the blade 1 from the lightning receptor 3 at the tip of the blade 1 to the root area of the blade 1 at the rotor hub.
- the lightning conductor portion is electrically connected to the hub, and lightning current from lightning striking the lightning receptor 3 can thus be led to earth via the lightning conductor 2 and the hub, said hub being earthed via a second lightning conductor (not shown) connected to an earth rod by means of e.g. the tower and the nacelle.
- a second lightning conductor (not shown) connected to an earth rod by means of e.g. the tower and the nacelle.
- one or more spark gaps may be provided between the lightning conductor 2 and the hub or between the lightning conductor 2 and the tower.
- the lightning conductors and the earth rod may be copper conductors or may be made of any other electrically conductive material.
- the lightning conductor 2 is insulated substantially in its entire longitudinal direction from the root area of the blade 1 to the connection area between the lightning conductor 2 and the lightning receptor 3.
- the blade 1 is made up of a shell body preferably made of fibre-reinforced polymer so that the blade 1 comprises a laminate shell 6 and a cavity 9 inside the blade 1 , respectively.
- the lightning conductor 2 and the lightning re- ceptor 3 are connected e.g. by means of a screw thread, where the lightning receptor 3 is preferably provided with an inner thread.
- the receptor 3 is provided with a connection piece having an outer thread, said connection piece being screwed together with an inner thread of the lightning conductor 2.
- the lightning receptor 3 is positioned in the laminate shell 6 of the blade 1 in such a way that a portion of the receptor 3 projects from the surface of the blade 1 at its trailing edge, where the lightning conductor 2 is passed through a portion of the laminate shell 6.
- the lightning conductor 2 shown herein includes a first insulation in the form of a bedding or covering insulation. Additionally, the connection area between the receptor 3 and the lightning conductor 2 is electrically insulated by means of a further insula- tion 5 in the form of a shrink sleeve.
- the shrink sleeve 5 extends a short distance into the bedding insulation of the lightning conductor 2 and a short distance into the receptor 3. Thus, the lightning conductor 2 is completely insulated up to the receptor 3.
- the blade 1 is provided with a drain hole 4 which also passes through the laminate 6 and which is positioned at the trailing edge of the blade 1.
- the drain hole 4 is connected to the cavity 9, the latter thus communicating with the environment.
- the blade 1 may be provided with a filter 7 to collect dust and other dirt, which may be present inside the blade 1 so that these are not thrown towards the drain hole 4 and block it.
- the filter 7 is positioned across the entire cross-section of the cavity 9.
- the surface of the blade 1 is provided with a diverter 8 extending from an area adjacent the receptor 3 at the trailing edge of the blade 1 to an area at the leading edge of the blade 1.
- This diverter ensures that lightning striking the leading edge of the blade 1 , while the blade 1 is in a substantially horizontal position, where the receptor 3 faces downwards, is conducted to the receptor 3 and via the latter to the lightning receptor 2.
- the diverter 8 may be a continuous strip of electrically conductive material, but may also be segmented, where leaders of ionized air are formed between the individual segments upon a lightning strike, the lightning current thereby being conducted along the diverter 8 in its longitudinal direction.
- the receptor 3 may be divided into two so that one portion of the receptor is moulded into the laminate shell 6 of the blade 1 , while the second portion is attached to the first portion by means e.g. a threaded connection.
- a threaded connection it is easy to exchange the portion of the receptor 3 projecting from the surface of the blade 1 , if said portion is worn or damaged after a lightning strike.
- Fig. 2 shows a second embodiment of a blade 101 according to the invention.
- the blade 101 according to this embodiment has a tip 105 formed as a solid body of e.g. polyurethane, PVC or fibre-reinforced polymer.
- the rest of the blade 101 is made of a shell body having a laminate shell 106.
- the lightning protection system of the blade includes a lightning conductor 102 extending substantially in the entire longitudinal direction of the blade 101 from the root end at the rotor hub and to the tip end..
- the lightning conductor 102 is guided out of the cavity of the blade 101 and into a hole created in the tip 105 and matching the lightning conductor 102.
- the lightning conductor may be glued to this hole.
- the lightning conductor is connected with a substantially egg-shaped lightning receptor 103.
- the lightning receptor 103 is positioned at the surface of the tip 105 so that a small portion thereof projects from the surface.
- the position and the form of the receptor 103 are adapted to match the desired aerodynamic properties of the tip 105 of the blade 101 , while simultaneously having a large metal surface, which ensures good durability and long life, since it contains a large amount of material, which may melt upon a lightning strike.
- the lightning conductor 102 and the receptor 103 are preferably connected by means of a threaded connection, where the connection area between the lightning conductor 102 and the receptor 103 may be electri- cally insulated by means of an additional insulation in the form of e.g. a shrink sleeve or silicone.
- the solid tip 105 may be sufficient to provide the desired electrical insulation.
- the tip 105 is provided with a cavity 109 being connected to two drain holes 104 so that the cavity can communicate with the environment via the holes.
- the tip 105 is additionally provided with a diverter extending between an area adjacent the drain holes 104 and an area adjacent the receptor 103 on the surface of the tip 105. Any lightning striking the drain holes 104 is thus conducted via the diverter to the receptor 103 and via the latter to the lightning conductor 102 and finally to earth via the hub, the tower or the like.
- the tip 105 is fastened to the rest of the blade 101 by means of a glue joint 108.
- Fig. 3 shows a third embodiment of a blade 201 according to the invention.
- the blade 201 according to this embodiment has a tip 205 formed as a substantially solid body of e.g. polyurethane, PVC or fibre-reinforced polymer as in the embodiment shown in Fig. 2.
- the rest of the blade 201 is made of a shell body having a laminate shell 206.
- the lightning protection system of the blade 201 includes a lightning conductor 202 extending substantially in the entire longitudinal direction of the blade 201 from the root end at the rotor hub and to the tip end.
- the lightning conductor 202 is guided out of the cavity of the blade 201 and into a hole created in the tip 205 and fitting the shape of the lightning conductor 202.
- the lightning conductor 202 is connected to a lightning receptor 203 having a rounded shape and positioned at the apex of the tip 205.
- the lightning receptor 203 is adapted so that there is a substantially smooth transition between the tip 205 and the receptor 203 and so that it has the desired aerodynamic properties of the tip 201.
- the receptor 203 according to this embodiment is a part of the tip of the blade 201.
- the lightning conductor 202 and the receptor 203 are connected by means of a clamped connection or a threaded connection 211. Moreover, the lightning conductor is anchored to the tip 205 by means of two plastic rods 210 with outer thread and two threaded holes in the receptor 203.
- the connection area between the lightning conductor 202 and the receptor 203 is electrically insulated by means of a further insulation in the form of e.g. a shrink material or silicone.
- the solid tip 205 may be sufficient to provide the desired electrical insulation.
- the present applicant has conducted a number of tests to examine lightning protection systems for blades in such worst-case scenarios.
- the so-called high voltage switching and lightning impulse simulations were conducted by suspending a blade in a horizontal position above a laboratory floor or surface which during the test simulates an equi- potential surface, which prior to a lightning strike occurs above the blade, while being near the horizontal position.
- a potential difference was built up between the laboratory surface and the lightning protection system of the blade to provoke a flashover be- tween the lightning protection system of the blade and the laboratory floor.
- the tests were carried out with both positive and negative polarity, where flashovers with positive polarity were carried out at 1050 kV, while flashovers with negative polarity were carried out at 1400 kV.
- a lightning conductor in the form of a cable having a copper core and an insulation made of high density polyethylene (HDPE) was particularly effective in preventing lightning striking through the surface of the blade.
- HDPE high density polyethylene
- the examined cable is constructed of a 50 mm 2 core 21 made of copper wires and an approx. 4,5 mm thick insulation sheathing 22 made of HDPE. Between the core 21 and the insulation 22, there is provided a semiconducting material 23 having the object to minimize electrical field concentrations at the individual copper wires.
- the semiconducting material is not absolutely necessary to achieve the desired effect for the lightning protection system. It was found to be suffi- cient to use a comparatively thin HDPE insulation. This is advantageous, since the cable does not result in an unnecessarily large increase in the blade weight. Moreover, such a cable is very inexpensive.
- the novel lightning protection system does not only effectively prevent lightning strikes through the surface of the blade, but also provides a simpler construction and is less expensive to manufacture than traditional light- ning protection systems with or without multireceptors.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL06818138T PL1957791T3 (en) | 2005-12-02 | 2006-12-01 | Lightning protection system for a wind turbine blade |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK200501707A DK178167B1 (en) | 2005-12-02 | 2005-12-02 | A lightning protection system for a wind turbine blade |
PCT/DK2006/000679 WO2007062659A1 (en) | 2005-12-02 | 2006-12-01 | Lightning protection system for a wind turbine blade |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1957791A1 true EP1957791A1 (en) | 2008-08-20 |
EP1957791B1 EP1957791B1 (en) | 2017-05-31 |
Family
ID=37735795
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06818138.7A Revoked EP1957791B1 (en) | 2005-12-02 | 2006-12-01 | Lightning protection system for a wind turbine blade |
Country Status (7)
Country | Link |
---|---|
US (1) | US8177509B2 (en) |
EP (1) | EP1957791B1 (en) |
CN (1) | CN101336342B (en) |
DK (1) | DK178167B1 (en) |
ES (1) | ES2639119T3 (en) |
PL (1) | PL1957791T3 (en) |
WO (1) | WO2007062659A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110953127A (en) * | 2018-09-26 | 2020-04-03 | 西门子歌美飒可再生能源公司 | Lightning protection for rotor blade attachment |
CN115182854A (en) * | 2022-07-20 | 2022-10-14 | 北部湾大学 | Lightning arrester for blade body of wind power blade |
Families Citing this family (63)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DK200600653A (en) * | 2006-05-09 | 2007-11-10 | Vestas Wind Sys As | Lightning protection system for a wind turbine blade, and method for producing a wind turbine blade with a lightning protection system |
US7766620B2 (en) * | 2007-02-08 | 2010-08-03 | General Electricc Company | Rotor blade with a lightning protection unit, wind energy system having the same and a method for constructing a rotor blade |
US20110020134A1 (en) * | 2007-12-20 | 2011-01-27 | Vestas Wind Systems A/S | Lightning receptors comprising carbon nanotubes |
DK2110552T4 (en) | 2008-04-15 | 2019-04-08 | Siemens Ag | Wind turbine blade with an integrated lightning arrester and method for manufacturing it |
ES2377669T3 (en) | 2008-07-02 | 2012-03-29 | Siemens Aktiengesellschaft | Wind turbine blade with lightning receiver and method to protect the surface of a wind turbine blade |
DE102008048617B9 (en) * | 2008-09-23 | 2012-08-16 | Repower Systems Ag | Rotor blade for a wind energy plant with at least one drainage opening |
DE102009010400A1 (en) * | 2009-02-26 | 2010-09-02 | Innovative Windpower Ag | Rotor blade for wind energy plant of wind turbine park, has interior body, external area and lightning conductor device, where lightning conductor device has lightning receiving device and lightning line device |
EP2226497A1 (en) * | 2009-03-06 | 2010-09-08 | Lm Glasfiber A/S | Wind turbine blade with a lightning protection system |
GB2470344B (en) * | 2009-03-17 | 2011-10-05 | Vestas Wind Sys As | A hinged connection apparatus for securing a first wind turbine component to a second providing electrical protection |
US8342805B2 (en) * | 2009-06-25 | 2013-01-01 | General Electric Company | Transversal conduction lightning protection system |
DE102009046293B4 (en) * | 2009-11-02 | 2013-03-28 | Repower Systems Ag | Rotor blade with drainage hole |
US8376704B2 (en) * | 2009-11-05 | 2013-02-19 | General Electric Company | Systems and method of assembling an air distribution system for use in a rotor blade of a wind turbine |
US8321062B2 (en) * | 2009-11-05 | 2012-11-27 | General Electric Company | Systems and method for operating a wind turbine having active flow control |
DE102009046586B4 (en) * | 2009-11-10 | 2012-02-23 | Nordex Energy Gmbh | Blade tip for a rotor blade of a wind turbine and method for mounting the blade tip to a rotor blade |
CN102667146A (en) * | 2009-11-12 | 2012-09-12 | 西门子公司 | Lightning protection for a nacelle of a wind turbine |
CN102472254A (en) * | 2009-12-24 | 2012-05-23 | 三菱重工业株式会社 | Wind wheel blade and wind-driven electricity generation device with same |
JP5346832B2 (en) * | 2010-02-04 | 2013-11-20 | 株式会社日本製鋼所 | Lightning protection structure for wind power blades |
EP2365218A1 (en) * | 2010-03-08 | 2011-09-14 | Lm Glasfiber A/S | Wind turbine blade with lightning protection system |
DE102010011275B4 (en) * | 2010-03-13 | 2012-04-26 | Kenersys Gmbh | Rotor blade drainage |
EP2395239B1 (en) * | 2010-06-11 | 2013-01-30 | Siemens Aktiengesellschaft | Rotor blade assembly |
CN102287338B (en) * | 2010-06-18 | 2015-05-27 | 新疆金风科技股份有限公司 | Lightning protection system, component and wind energy power generator blade with lightning protection system |
JP5158730B2 (en) * | 2010-06-30 | 2013-03-06 | 株式会社日本製鋼所 | Lightning protection structure for wind power blades |
EP2596239A4 (en) | 2010-07-23 | 2014-06-25 | Erico Int Corp | Receptor for wind turbine blade lightning protection |
US7988415B2 (en) * | 2010-08-31 | 2011-08-02 | General Electric Company | Lightning protection for wind turbines |
DE102010040596A1 (en) * | 2010-09-10 | 2012-03-15 | Aloys Wobben | Removable rotor blade tip |
CN102536677A (en) * | 2010-12-22 | 2012-07-04 | 上海艾郎风电科技发展有限公司 | Vane lightning arrestor for wind power generation |
DK2520796T3 (en) * | 2011-05-03 | 2015-08-24 | Siemens Ag | Lightning protection system for a windmill and method for protecting components of a windmill against lightning |
JP5546624B2 (en) | 2011-12-09 | 2014-07-09 | 三菱重工業株式会社 | Windmill wing |
US8449259B1 (en) * | 2012-05-15 | 2013-05-28 | Modular Wind Energy, Inc. | Lightning protection for wind turbine blades, and associated systems and methods |
DE102012015353A1 (en) * | 2012-08-06 | 2014-02-06 | Carl Von Ossietzky Universität Oldenburg | Rotor blade and rotor blade tip |
ES2716309T3 (en) * | 2012-11-15 | 2019-06-11 | Wobben Properties Gmbh | Rotor blade tip and manufacturing procedure |
DE102013107296B4 (en) | 2013-07-10 | 2015-03-19 | Senvion Se | Rotor blade with lightning rod |
GB2519331A (en) * | 2013-10-17 | 2015-04-22 | Vestas Wind Sys As | Improvements relating to lightning protection systems for wind turbine blades |
GB2519332A (en) | 2013-10-17 | 2015-04-22 | Vestas Wind Sys As | Improvements relating to lightning protection systems for wind turbine blades |
GB2521809A (en) | 2013-10-17 | 2015-07-08 | Vestas Wind Sys As | Improvements relating to lightning protection systems for wind turbine blades |
US9868536B2 (en) * | 2013-10-30 | 2018-01-16 | Goodrich Corporation | Electrical interconnects for ice protection systems |
CN103603775B (en) * | 2013-11-22 | 2016-06-01 | 北京金风科创风电设备有限公司 | Lightning protection device, direct-drive wind generating set and lightning protection method thereof |
EP3218596B1 (en) | 2014-11-14 | 2022-10-26 | Polytech A/S | A fully insulated tip unit for a lightning protection system for a wind turbine blade and a wind turbine blade comprising the same |
CN104791196B (en) * | 2015-03-05 | 2018-04-06 | 保定华翼风电叶片研究开发有限公司 | A kind of wind turbine blade draws thunder explosion-protection equipment and its installation method |
JP5874992B1 (en) * | 2015-05-18 | 2016-03-02 | 株式会社落雷抑制システムズ | Wind turbine blade |
CN105179182A (en) * | 2015-09-16 | 2015-12-23 | 孙麓轩 | Blade for wind generating set |
DK3184814T3 (en) | 2015-12-23 | 2020-11-23 | Lm Wp Patent Holding As | WIND TURBE WINGS AND POTENTIAL COMPENSATION SYSTEMS |
DK201600205A1 (en) * | 2016-03-05 | 2017-10-02 | Yan Zhuang | Air termination for a wind turbine blade |
US10344743B2 (en) | 2016-05-13 | 2019-07-09 | Erico International Corporation | Lightning protection system and method for wind turbine blades |
USD803163S1 (en) | 2016-05-13 | 2017-11-21 | Erico International Corporation | Tip receptor mount for lightning protection systems |
DE102016218594C9 (en) | 2016-09-27 | 2019-11-21 | Siemens Gamesa Renewable Energy A/S | wind turbine |
DK3510277T3 (en) * | 2016-11-04 | 2022-08-29 | Siemens Gamesa Renewable Energy As | Lightning protection system for a rotor blade with a winglet |
JP6877575B2 (en) | 2017-04-26 | 2021-05-26 | エムエイチアイ ヴェスタス オフショア ウィンド エー/エス | Windmill wings and wind power generators |
DE102017110635A1 (en) * | 2017-05-16 | 2018-11-22 | Schütz GmbH & Co. KGaA | rotor blade |
US11519382B2 (en) | 2017-10-02 | 2022-12-06 | Vestas Wind Systems A/S | Relating to structural components for wind turbine blades |
CN108223305B (en) * | 2017-12-29 | 2021-03-26 | 中国电力科学研究院有限公司 | Electrode lightning receiving device for wind turbine generator blade |
CN110594108A (en) * | 2018-06-13 | 2019-12-20 | 中材科技风电叶片股份有限公司 | Apex lightning protection device, blade lightning protection system, fan blade and aerogenerator |
CN110594109A (en) * | 2018-06-13 | 2019-12-20 | 中材科技风电叶片股份有限公司 | Apex lightning protection device, blade lightning protection system, fan blade and aerogenerator |
JP6657314B2 (en) * | 2018-06-15 | 2020-03-04 | 三菱重工業株式会社 | Wind turbine blade protection structure and method of forming the same |
CN112912616A (en) * | 2018-11-01 | 2021-06-04 | 通用电气公司 | Wind turbine rotor blade joint constructed of dissimilar materials |
DE102018009039A1 (en) * | 2018-11-19 | 2020-05-20 | Senvion Gmbh | Rotor blade of a wind turbine with an insulator layer and a protective layer |
US11608815B2 (en) * | 2018-11-20 | 2023-03-21 | Lm Wind Power A/S | Wind turbine blade lightning protection system |
EP3736443A1 (en) * | 2019-05-09 | 2020-11-11 | Siemens Gamesa Renewable Energy A/S | Blade for a wind turbine and wind turbine |
DE102019122583A1 (en) * | 2019-08-22 | 2021-02-25 | Wobben Properties Gmbh | Method for checking a lightning protection system in a wind turbine rotor blade |
CN111237124B (en) * | 2020-02-19 | 2021-11-05 | 上海电气风电集团股份有限公司 | System integrating wind power blade leading edge protection and lightning stroke protection |
CN112648135B (en) * | 2020-12-09 | 2022-01-11 | 华能浙江平湖海上风电有限责任公司 | Wind power blade and refitting process thereof |
CN113417814B (en) * | 2021-08-06 | 2022-11-04 | 中国华能集团清洁能源技术研究院有限公司 | Lightning protection equipment and wind generating set |
CN114122917A (en) * | 2021-11-25 | 2022-03-01 | 华能安徽蒙城风力发电有限责任公司 | Lightning arrester for wind power generation |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5369225A (en) * | 1993-04-20 | 1994-11-29 | Minnesota Mining And Manufacturing Company | Wire connector |
DK9400343U4 (en) * | 1994-09-07 | 1995-10-13 | Bonus Energy As | Lightning protection of wind turbine wings |
US5573426A (en) * | 1995-03-28 | 1996-11-12 | Grant; George E. | Covered automotive jumper cables |
US6320119B1 (en) | 1998-07-27 | 2001-11-20 | Erico International Corporation | Lightning air terminals and method of design and application |
DK173460B2 (en) | 1998-09-09 | 2004-08-30 | Lm Glasfiber As | Windmill wing with lightning conductor |
DK174232B1 (en) * | 2000-12-13 | 2002-10-07 | Lm Glasfiber As | Combined lightning receptor and drainage channel in wind turbine wings |
CA2457998A1 (en) | 2001-09-21 | 2003-04-03 | 3M Innovative Properties Company | Multi-part insulating cover |
DE10233528B4 (en) | 2002-06-27 | 2008-01-24 | Dehn + Söhne Gmbh + Co. Kg | Blitzstromableiteinrichtung |
DK200300882A (en) | 2003-06-12 | 2004-12-13 | Lm Glasfiber As | Lightning detection, including in wind power plants |
US7265961B2 (en) * | 2003-07-01 | 2007-09-04 | Erico International Corporation | Lightning protection device and method |
DK178207B1 (en) | 2004-01-23 | 2015-08-17 | Lm Wind Power As | Wing for a wind power plant comprising segmented lightning conductors and method of manufacturing them |
-
2005
- 2005-12-02 DK DK200501707A patent/DK178167B1/en active
-
2006
- 2006-12-01 ES ES06818138.7T patent/ES2639119T3/en active Active
- 2006-12-01 WO PCT/DK2006/000679 patent/WO2007062659A1/en active Application Filing
- 2006-12-01 CN CN2006800521021A patent/CN101336342B/en active Active
- 2006-12-01 PL PL06818138T patent/PL1957791T3/en unknown
- 2006-12-01 US US12/085,691 patent/US8177509B2/en active Active
- 2006-12-01 EP EP06818138.7A patent/EP1957791B1/en not_active Revoked
Non-Patent Citations (1)
Title |
---|
See references of WO2007062659A1 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110953127A (en) * | 2018-09-26 | 2020-04-03 | 西门子歌美飒可再生能源公司 | Lightning protection for rotor blade attachment |
US11913433B2 (en) | 2018-09-26 | 2024-02-27 | Siemens Gamesa Renewable Energy A/S | Lightning protection for a rotor blade add-on |
CN115182854A (en) * | 2022-07-20 | 2022-10-14 | 北部湾大学 | Lightning arrester for blade body of wind power blade |
Also Published As
Publication number | Publication date |
---|---|
CN101336342A (en) | 2008-12-31 |
US8177509B2 (en) | 2012-05-15 |
PL1957791T3 (en) | 2017-10-31 |
WO2007062659A1 (en) | 2007-06-07 |
DK200501707A (en) | 2007-06-03 |
CN101336342B (en) | 2012-07-11 |
EP1957791B1 (en) | 2017-05-31 |
DK178167B1 (en) | 2015-07-13 |
US20090139739A1 (en) | 2009-06-04 |
ES2639119T3 (en) | 2017-10-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1957791B1 (en) | Lightning protection system for a wind turbine blade | |
US8888454B2 (en) | Wind turbine blade with a lightning protection system | |
US9041410B2 (en) | Wind turbine blade with lightning protection system | |
EP2944809B1 (en) | Method of manufacturing a wind turbine blade | |
CA2772211C (en) | A partial pitch wind turbine blade with lightning protection | |
WO2012055418A1 (en) | A wind turbine lightning protection system and wind turbine blade | |
WO2013007267A1 (en) | A wind turbine blade | |
EP3510282A1 (en) | Lightning receptor for a rotor blade of a wind turbine | |
US8215911B2 (en) | Wind power plant with lightning protection arrangement | |
EP3884156B1 (en) | Wind turbine blade with lightning protection system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20080618 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
DAX | Request for extension of the european patent (deleted) | ||
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: LM WIND POWER A/S |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R079 Ref document number: 602006052705 Country of ref document: DE Free format text: PREVIOUS MAIN CLASS: F03D0011000000 Ipc: F03D0080300000 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: F03D 80/30 20160101AFI20161101BHEP |
|
INTG | Intention to grant announced |
Effective date: 20161117 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: LM WP PATENT HOLDING A/S |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP Ref country code: GB Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 897732 Country of ref document: AT Kind code of ref document: T Effective date: 20170615 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 602006052705 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MP Effective date: 20170531 |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MK05 Ref document number: 897732 Country of ref document: AT Kind code of ref document: T Effective date: 20170531 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2639119 Country of ref document: ES Kind code of ref document: T3 Effective date: 20171025 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170531 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170531 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170901 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170531 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170531 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170831 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170930 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170531 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170531 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 12 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170531 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170531 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170531 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170531 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170531 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R026 Ref document number: 602006052705 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170531 |
|
PLBI | Opposition filed |
Free format text: ORIGINAL CODE: 0009260 |
|
PLAX | Notice of opposition and request to file observation + time limit sent |
Free format text: ORIGINAL CODE: EPIDOSNOBS2 |
|
26 | Opposition filed |
Opponent name: VESTAS WIND SYSTEMS A/S Effective date: 20180226 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170531 |
|
PLBB | Reply of patent proprietor to notice(s) of opposition received |
Free format text: ORIGINAL CODE: EPIDOSNOBS3 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20171201 |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20171231 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20171201 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20171231 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20171231 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20171231 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20061201 Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170531 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170531 |
|
PLCK | Communication despatched that opposition was rejected |
Free format text: ORIGINAL CODE: EPIDOSNREJ1 |
|
APAH | Appeal reference modified |
Free format text: ORIGINAL CODE: EPIDOSCREFNO |
|
APBM | Appeal reference recorded |
Free format text: ORIGINAL CODE: EPIDOSNREFNO |
|
APBP | Date of receipt of notice of appeal recorded |
Free format text: ORIGINAL CODE: EPIDOSNNOA2O |
|
APBQ | Date of receipt of statement of grounds of appeal recorded |
Free format text: ORIGINAL CODE: EPIDOSNNOA3O |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170531 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20211117 Year of fee payment: 16 Ref country code: GB Payment date: 20211118 Year of fee payment: 16 Ref country code: TR Payment date: 20211118 Year of fee payment: 16 Ref country code: DE Payment date: 20211117 Year of fee payment: 16 |
|
RAP2 | Party data changed (patent owner data changed or rights of a patent transferred) |
Owner name: LM WIND POWER A/S |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: PL Payment date: 20211118 Year of fee payment: 16 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20220103 Year of fee payment: 16 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R103 Ref document number: 602006052705 Country of ref document: DE Ref country code: DE Ref legal event code: R064 Ref document number: 602006052705 Country of ref document: DE |
|
APBU | Appeal procedure closed |
Free format text: ORIGINAL CODE: EPIDOSNNOA9O |
|
RDAF | Communication despatched that patent is revoked |
Free format text: ORIGINAL CODE: EPIDOSNREV1 |
|
RDAG | Patent revoked |
Free format text: ORIGINAL CODE: 0009271 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: PATENT REVOKED |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
27W | Patent revoked |
Effective date: 20220921 |
|
GBPR | Gb: patent revoked under art. 102 of the ep convention designating the uk as contracting state |
Effective date: 20220921 |
|
P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230522 |